Nostalrius Begins - Quality wow vanilla realm (1.12)

hi i have that problem, when i try to connect the server it always giving me this error : Disconnected from server.
I changed realm to Test Realm-IsVV2 and that's where the problem starts. When i was at the other one , there were no problems. and now i cant change realm because i cant connect the server :<.. how can i reset realm list or smth ?

Did you read any of the sticky threads? I'm gonna go on a hunch and say no.

https://forum.nostalrius.org/viewtopic.php?f=45&t=11569
In-depth Troubleshooting > "Disconnected from server" > Instructions on how to switch from Test IsVV2 to Nostalrius Begins realms.